Improvement in paddle-wheels



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN PADDLE-WHEELS.

Specication forming part of Letters Patent No. 117,991, dated August 15,1871.

To alt whom it 1mi/y concern:

Be it known that I, DANIEL S. DARLING, of Brooklyn, in the county 0I'Kings and State of New gork, have invented a new and useful 11nprovementin Steam-boat Propeller; and I do hereby declare that the Ibllowing is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying' drawing forming part of this speciiication.

This invention relates to a new and important improvement iu wheels forpropelling vessels on the water, whereby many of the objectionsto theordinary paddle-wheel are obviated. My inven tion consists in improvingsteam-boat paddlewheels, as hereinafter fully described and subsequentlypointed out in the claim.

In the accompanying drawing, Figure 1 represents a vertical sideelevation in section taken on the line .c a' of Fig. 2. Fig. 2 is afront view of the periphery of the wheel, being extended to represent aplane. 3 is a frontview looking over the top of the wheel, showing theprojection of the side iianges.

Similar letters of reieren ce indicate correspondin g parts.

A A are the side casings or disks incasingthe buckets an d compartments,with their peripheries extending` out from the buckets, both disks beingrigidly attached to the shaft, the same as the ordinary paddle-wheelcenters. B represents the buckets or floats arranged between the sides Aon radial lines in the usual manner, but conined to the sides at eachend in any substantial manner. C represents plates whose widthcorresponds with that of the buckets placed in the four angles, thusforming rhombus-shapedboxes or compartments D in the spaces between thebuckets. The position of the buckets B being governed by lines radiatingfrom the center, the area of the rhomb-shaped compartment D necessarilydiminishes as it extends toward the center. The projecting` anges E Ecut the water and prevent lateral currents as the wheel revolves. Thecompartments D dip into and hold the water for the time being, butdischarge it at the proper time. Triangular-shaped compartments F, itwill be seen, are left in the a-ngles between the buckets, which alsohold the water, and add to thc effect produced by the compartments D.

The ordinary paddle-wheel may be easily mod iied so as to embrace myimprovement. The ends of the buckets or paddles which proj ect beyondthe arms ofi' the common paddle-wheel may be cut off, and then the sidesare incased with projecting flanges, as above described. Therhomb-i'ormed boxes or compartments are then placed and properly securedbetween the buckets, and we have a propeller of superior power, and onewhich, in its revolution, causes no lateral currents, and whichespecially adapts it for canal navigation.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The casing-s A A flanged at E E, the compartments DF, and the buckets B, arranged together in a paddle-wheel, as and forthe purpose specited.

DANL. S. DARLING.

Vitnesses GEO. W. MABEE, T. B. MosI-IER.

